140
Appetizer pieces
Plan enough. Waste less.
Smarter gathering plans
How much should you buy for your party?
Get a practical food, drink, ice and budget estimate in seconds—without guessing or overbuying.
Free to use No sign-up 10% buffer included
25guests
01
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Age 13 and over
Calculated as smaller portions
$
Your Guest Formula
Shopping estimate for 25 guests
13 lb
Main protein
13 lb
Prepared sides
30
Dessert portions
60
Water servings
60
Soft-drink servings
25 lb
Ice
Estimated total
$483$17 below your budget
Quantities include a 10% planning buffer. Results are estimates only; actual needs and prices vary by menu, guests, location and serving sizes.
The method
A party food and drink calculator for groups of any size.
Planning food for 10 people or refreshments for 100 follows the same principle: count the guests, match the serving style, allow for event length and add a sensible buffer.
Count every guest
Adults receive full portions while children are estimated at 60% of an adult portion.
Adjust the occasion
Serving style, event length and appetite change the recommended amounts.
Add breathing room
A 10% buffer covers second helpings and unexpected guests without excessive waste.
Take the plan with you
The Guest Formula Party Planning Pack
Turn the calculator estimate into a complete shopping and event plan. The downloadable bundle includes a concise planning guide and an editable Excel workbook for quantities, budget, RSVPs and final checks.
- Printable 13-page planning guide
- Editable Excel planning workbook
- One-time purchase—no subscription
Quick answers
Before you shop
Does the estimate account for children?
Yes. Children are calculated at approximately 60% of an adult food portion while still receiving a full drink and water allowance.
Should I buy more for a buffet?
The buffet setting already provides larger protein and side quantities because guests typically serve themselves more generously.
What does the cost estimate include?
It is a planning estimate for food and beverages. Local prices, premium ingredients, catering and rentals can change the final cost.
How much ice should I buy for a party?
Guest Formula starts with one pound per guest, or one and a half pounds per guest when beer and wine are included. Hot outdoor events may require more.